diff options
Diffstat (limited to 'filter/source/graphicfilter/icgm/bitmap.cxx')
| -rw-r--r-- | filter/source/graphicfilter/icgm/bitmap.cxx | 433 |
1 files changed, 433 insertions, 0 deletions
diff --git a/filter/source/graphicfilter/icgm/bitmap.cxx b/filter/source/graphicfilter/icgm/bitmap.cxx new file mode 100644 index 000000000..67652d9ec --- /dev/null +++ b/filter/source/graphicfilter/icgm/bitmap.cxx @@ -0,0 +1,433 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + + +#include <sal/log.hxx> +#include <unotools/configmgr.hxx> +#include <vcl/BitmapTools.hxx> +#include <memory> + +#include "bitmap.hxx" +#include "elements.hxx" + +namespace { + +Color BMCOL(sal_uInt32 _col) { + return Color( static_cast<sal_Int8>(_col >> 16 ), static_cast<sal_Int8>( _col >> 8 ), static_cast<sal_Int8>(_col) ); +} + +} + +CGMBitmap::CGMBitmap( CGM& rCGM ) : + mpCGM ( &rCGM ), + pCGMBitmapDescriptor ( new CGMBitmapDescriptor ) +{ + ImplGetBitmap( *pCGMBitmapDescriptor ); +}; + + +CGMBitmap::~CGMBitmap() +{ +} + +namespace +{ + bool isLegalBitsPerPixel(sal_uInt32 nBitsPerPixel) + { + switch (nBitsPerPixel) + { + case 1: + case 2: + case 4: + case 8: + case 24: + return true; + default: + break; + } + return false; + } +} + +void CGMBitmap::ImplGetBitmap( CGMBitmapDescriptor& rDesc ) +{ + rDesc.mbStatus = true; + + if (!ImplGetDimensions(rDesc) || !rDesc.mpBuf) + return; + + if (!isLegalBitsPerPixel(rDesc.mnDstBitsPerPixel)) + { + rDesc.mbStatus = false; + return; + } + + try + { + if (rDesc.mnScanSize) + { + vcl::bitmap::RawBitmap aBitmap( Size( rDesc.mnX, rDesc.mnY ), 24 ); + + // the picture may either be read from left to right or right to left, from top to bottom ... + + tools::Long nxCount = rDesc.mnX + 1; // +1 because we are using prefix decreasing + tools::Long nyCount = rDesc.mnY + 1; + tools::Long nx, ny, nxC; + + switch ( rDesc.mnDstBitsPerPixel ) { + case 1 : { + std::vector<Color> palette(2); + if ( rDesc.mnLocalColorPrecision == 1 ) + palette = ImplGeneratePalette( rDesc ); + else { + palette[0] = BMCOL( mpCGM->pElement->nBackGroundColor ); + palette[1] = ( mpCGM->pElement->nAspectSourceFlags & ASF_FILLINTERIORSTYLE ) + ? BMCOL( mpCGM->pElement->pFillBundle->GetColor() ) + : BMCOL( mpCGM->pElement->aFillBundle.GetColor() ); + }; + for (ny = 0; rDesc.mbStatus && --nyCount; ny++, rDesc.mpBuf += rDesc.mnScanSize) { + nxC = nxCount; + for ( nx = 0; --nxC; nx++ ) { + // this is not fast, but a one bit/pixel format is rarely used + const sal_uInt8* pPos = rDesc.mpBuf + (nx >> 3); + if (pPos >= rDesc.mpEndBuf) + { + SAL_WARN("filter.icgm", "buffer is too small"); + rDesc.mbStatus = false; + break; + } + sal_uInt8 colorIndex = static_cast<sal_uInt8>((*pPos >> ((nx & 7)^7))) & 1; + aBitmap.SetPixel(ny, nx, palette[colorIndex]); + } + } + } + break; + + case 2 : { + auto palette = ImplGeneratePalette( rDesc ); + for (ny = 0; rDesc.mbStatus && --nyCount; ny++, rDesc.mpBuf += rDesc.mnScanSize) { + nxC = nxCount; + for ( nx = 0; --nxC; nx++ ) { + // this is not fast, but a two bits/pixel format is rarely used + const sal_uInt8* pPos = rDesc.mpBuf + (nx >> 2); + if (pPos >= rDesc.mpEndBuf) + { + SAL_WARN("filter.icgm", "buffer is too small"); + rDesc.mbStatus = false; + break; + } + aBitmap.SetPixel(ny, nx, palette[static_cast<sal_uInt8>( (*pPos >> (((nx & 3)^3) << 1))) & 3]); + } + } + } + break; + + case 4 : { + auto palette = ImplGeneratePalette( rDesc ); + for (ny = 0; rDesc.mbStatus && --nyCount; ny++, rDesc.mpBuf += rDesc.mnScanSize) { + nxC = nxCount; + sal_uInt8* pTemp = rDesc.mpBuf; + for ( nx = 0; --nxC; nx++ ) { + + if (pTemp >= rDesc.mpEndBuf) + { + SAL_WARN("filter.icgm", "buffer is too small"); + rDesc.mbStatus = false; + break; + } + + sal_uInt8 nDat = *pTemp++; + + aBitmap.SetPixel(ny, nx, palette[static_cast<sal_uInt8>(nDat >> 4)]); + if ( --nxC ) { + ++nx; + aBitmap.SetPixel(ny, nx, palette[static_cast<sal_uInt8>(nDat & 15)]); + } else + break; + } + } + } + break; + + case 8 : { + auto palette = ImplGeneratePalette( rDesc ); + for (ny = 0; rDesc.mbStatus && --nyCount; ny++, rDesc.mpBuf += rDesc.mnScanSize) { + sal_uInt8* pTemp = rDesc.mpBuf; + nxC = nxCount; + for ( nx = 0; --nxC; nx++ ) { + + if (pTemp >= rDesc.mpEndBuf) + { + SAL_WARN("filter.icgm", "buffer is too small"); + rDesc.mbStatus = false; + break; + } + + aBitmap.SetPixel(ny, nx, palette[*(pTemp++)]); + } + } + } + break; + + case 24 : { + Color aBitmapColor; + for (ny = 0; rDesc.mbStatus && --nyCount; ny++, rDesc.mpBuf += rDesc.mnScanSize) { + sal_uInt8* pTemp = rDesc.mpBuf; + nxC = nxCount; + for ( nx = 0; --nxC; nx++ ) { + + if (pTemp + 2 >= rDesc.mpEndBuf) + { + SAL_WARN("filter.icgm", "buffer is too small"); + rDesc.mbStatus = false; + break; + } + + aBitmapColor.SetRed( *pTemp++ ); + aBitmapColor.SetGreen( *pTemp++ ); + aBitmapColor.SetBlue( *pTemp++ ); + aBitmap.SetPixel(ny, nx, aBitmapColor); + } + } + } + break; + } + + if ( rDesc.mbStatus ) + rDesc.mxBitmap = vcl::bitmap::CreateFromData(std::move(aBitmap)); + } + + double nX = rDesc.mnR.X - rDesc.mnQ.X; + double nY = rDesc.mnR.Y - rDesc.mnQ.Y; + + rDesc.mndy = std::hypot(nX, nY); + + nX = rDesc.mnR.X - rDesc.mnP.X; + nY = rDesc.mnR.Y - rDesc.mnP.Y; + + rDesc.mndx = std::hypot(nX, nY); + + nX = rDesc.mnR.X - rDesc.mnP.X; + nY = rDesc.mnR.Y - rDesc.mnP.Y; + + double fSqrt = std::hypot(nX, nY); + rDesc.mnOrientation = fSqrt != 0.0 ? basegfx::rad2deg(acos(nX / fSqrt)) : 0.0; + if ( nY > 0 ) + rDesc.mnOrientation = 360 - rDesc.mnOrientation; + + nX = rDesc.mnQ.X - rDesc.mnR.X; + nY = rDesc.mnQ.Y - rDesc.mnR.Y; + + double fAngle = basegfx::deg2rad( 360 - rDesc.mnOrientation ); + double fSin = sin(fAngle); + double fCos = cos(fAngle); + nX = fCos * nX + fSin * nY; + nY = -( fSin * nX - fCos * nY ); + + fSqrt = std::hypot(nX, nY); + fAngle = fSqrt != 0.0 ? basegfx::rad2deg(acos(nX / fSqrt)) : 0.0; + if ( nY > 0 ) + fAngle = 360 - fAngle; + + if ( fAngle > 180 ) { // is the picture build upwards or downwards ? + rDesc.mnOrigin = rDesc.mnP; + } else { + rDesc.mbVMirror = true; + rDesc.mnOrigin = rDesc.mnP; + rDesc.mnOrigin.X += rDesc.mnQ.X - rDesc.mnR.X; + rDesc.mnOrigin.Y += rDesc.mnQ.Y - rDesc.mnR.Y; + } + } + catch (const std::bad_alloc&) + { + rDesc.mbStatus = false; + } +} + +std::vector<Color> CGMBitmap::ImplGeneratePalette( CGMBitmapDescriptor const & rDesc ) +{ + sal_uInt16 nColors = sal::static_int_cast< sal_uInt16 >( + 1 << rDesc.mnDstBitsPerPixel); + std::vector<Color> palette( nColors ); + for ( sal_uInt16 i = 0; i < nColors; i++ ) + { + palette[i] = BMCOL( mpCGM->pElement->aLatestColorTable[ i ] ); + } + return palette; +} + + +bool CGMBitmap::ImplGetDimensions( CGMBitmapDescriptor& rDesc ) +{ + mpCGM->ImplGetPoint( rDesc.mnP ); // parallelogram p < - > r + mpCGM->ImplGetPoint( rDesc.mnQ ); // | + mpCGM->ImplGetPoint( rDesc.mnR ); // q + sal_uInt32 nPrecision = mpCGM->pElement->nIntegerPrecision; + rDesc.mnX = mpCGM->ImplGetUI( nPrecision ); + rDesc.mnY = mpCGM->ImplGetUI( nPrecision ); + rDesc.mnLocalColorPrecision = mpCGM->ImplGetI( nPrecision ); + rDesc.mnScanSize = 0; + switch( rDesc.mnLocalColorPrecision ) + { + case tools::Long(0x80000001) : // monochrome ( bit = 0->backgroundcolor ) + case 0 : // bit = 1->fillcolor + rDesc.mnDstBitsPerPixel = 1; + break; + case 1 : // 2 color indexed ( monochrome ) + case -1 : + rDesc.mnDstBitsPerPixel = 1; + break; + case 2 : // 4 color indexed + case -2 : + rDesc.mnDstBitsPerPixel = 2; + break; + case 4 : // 16 color indexed + case -4 : + rDesc.mnDstBitsPerPixel = 4; + break; + case 8 : // 256 color indexed + case -8 : + rDesc.mnDstBitsPerPixel = 8; + rDesc.mnScanSize = rDesc.mnX; + break; + case 16 : // NS + case -16 : + rDesc.mbStatus = false; + break; + case 24 : // 24 bit directColor ( 8 bits each component ) + case -24 : + rDesc.mnDstBitsPerPixel = 24; + break; + case 32 : // NS + case -32 : + rDesc.mbStatus = false; + break; + + } + // mnCompressionMode == 0 : CCOMP_RUNLENGTH + // == 1 : CCOMP_PACKED ( no compression. each row starts on a 4 byte boundary ) + if ( ( rDesc.mnCompressionMode = mpCGM->ImplGetUI16() ) != 1 ) + rDesc.mbStatus = false; + + if ( !( rDesc.mnX || rDesc.mnY ) ) + rDesc.mbStatus = false; + + sal_uInt32 nHeaderSize = 2 + 3 * nPrecision + 3 * mpCGM->ImplGetPointSize(); + + sal_uInt32 nWidthBits; + if (o3tl::checked_multiply(rDesc.mnX, rDesc.mnDstBitsPerPixel, nWidthBits)) + { + rDesc.mbStatus = false; + return false; + } + + rDesc.mnScanSize = (nWidthBits + 7) >> 3; + + sal_uInt32 nScanSize; + nScanSize = rDesc.mnScanSize; + if ( ( nScanSize * rDesc.mnY + nHeaderSize ) != mpCGM->mnElementSize ) // try a scansize without dw alignment + { + nScanSize = ( rDesc.mnScanSize + 1 ) & ~1; + if ( ( nScanSize * rDesc.mnY + nHeaderSize ) != mpCGM->mnElementSize ) // then we'll try word alignment + { + nScanSize = ( rDesc.mnScanSize + 3 ) & ~3; + if ( ( nScanSize * rDesc.mnY + nHeaderSize ) != mpCGM->mnElementSize ) // and last we'll try dword alignment + { + nScanSize = ( rDesc.mnScanSize + 1 ) & ~1; // and LAST BUT NOT LEAST we'll try word alignment without aligning the last line + if ( ( nScanSize * ( rDesc.mnY - 1 ) + rDesc.mnScanSize + nHeaderSize ) != mpCGM->mnElementSize ) + { + nScanSize = ( rDesc.mnScanSize + 3 ) & ~3; + if ( ( nScanSize * ( rDesc.mnY - 1 ) + rDesc.mnScanSize + nHeaderSize ) != mpCGM->mnElementSize ) + { + mpCGM->mnParaSize = 0; // this format is corrupt + rDesc.mbStatus = false; + } + } + } + } + } + rDesc.mnScanSize = nScanSize; + if ( rDesc.mbStatus ) + { + rDesc.mpBuf = mpCGM->mpSource + mpCGM->mnParaSize; // mpBuf now points to the first scanline + rDesc.mpEndBuf = mpCGM->mpEndValidSource; + mpCGM->mnParaSize += rDesc.mnScanSize * rDesc.mnY; + } + return rDesc.mbStatus; +} + + +void CGMBitmap::ImplInsert( CGMBitmapDescriptor const & rSource, CGMBitmapDescriptor& rDest ) +{ + if (utl::ConfigManager::IsFuzzing() && rDest.mxBitmap.GetSizePixel().Height() + rSource.mnY > SAL_MAX_UINT16) + { + SAL_WARN("filter.icgm", "bitmap would expand too much"); + rDest.mbStatus = false; + return; + } + rDest.mxBitmap.Expand( 0, rSource.mnY ); + rDest.mxBitmap.CopyPixel( tools::Rectangle( Point( 0, rDest.mnY ), Size( rSource.mnX, rSource.mnY ) ), + tools::Rectangle( Point( 0, 0 ), Size( rSource.mnX, rSource.mnY ) ), &rSource.mxBitmap ); + + if ( ( rSource.mnR.Y == rDest.mnQ.Y ) && ( rSource.mnR.X == rDest.mnQ.X ) ) + { // Insert on Bottom + if ( mpCGM->mnVDCYmul == -1 ) + rDest.mnOrigin = rSource.mnOrigin; // new origin + FloatPoint aFloatPoint; + aFloatPoint.X = rSource.mnQ.X - rSource.mnR.X; + aFloatPoint.Y = rSource.mnQ.Y - rSource.mnR.Y; + rDest.mnQ.X += aFloatPoint.X; + rDest.mnQ.Y += aFloatPoint.Y; + rDest.mnP = rSource.mnP; + rDest.mnR = rSource.mnR; + } + else + { // Insert on Top + if ( mpCGM->mnVDCYmul == 1 ) + rDest.mnOrigin = rSource.mnOrigin; // new origin + rDest.mnP = rSource.mnP; + rDest.mnR = rSource.mnR; + } + rDest.mnY += rSource.mnY; + rDest.mndy += rSource.mndy; +}; + +std::unique_ptr<CGMBitmap> CGMBitmap::GetNext() +{ + std::unique_ptr<CGMBitmap> xCGMTempBitmap; + if (!pCGMBitmapDescriptor->mxBitmap.IsEmpty() && pCGMBitmapDescriptor->mbStatus) + { + xCGMTempBitmap.reset(new CGMBitmap(*mpCGM)); + if ( ( static_cast<tools::Long>(xCGMTempBitmap->pCGMBitmapDescriptor->mnOrientation) == static_cast<tools::Long>(pCGMBitmapDescriptor->mnOrientation) ) && + ( ( ( xCGMTempBitmap->pCGMBitmapDescriptor->mnR.X == pCGMBitmapDescriptor->mnQ.X ) && + ( xCGMTempBitmap->pCGMBitmapDescriptor->mnR.Y == pCGMBitmapDescriptor->mnQ.Y ) ) || + ( ( xCGMTempBitmap->pCGMBitmapDescriptor->mnQ.X == pCGMBitmapDescriptor->mnR.X ) && + ( xCGMTempBitmap->pCGMBitmapDescriptor->mnQ.Y == pCGMBitmapDescriptor->mnR.Y ) ) ) ) + { + ImplInsert( *(xCGMTempBitmap->pCGMBitmapDescriptor), *pCGMBitmapDescriptor ); + xCGMTempBitmap.reset(); + return xCGMTempBitmap; + } + + pCGMBitmapDescriptor.swap(xCGMTempBitmap->pCGMBitmapDescriptor); + } + return xCGMTempBitmap; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |